Reference Design - MOSFET Driver for Half Bridge with a Fly-Buck to Provide Isolated Power

(ACTIVE) PMP10645

Description & Features

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Description

The PMP10645 reference design is designed for SM74101 mosfet driver with a Fly-Buck power supply to drive half bridge. The SM74101 is a tiny 7A mosfet driver which can support 3A source current and 7A sink current. The LM5017 isolated output Fly-Buck power supply has four outputs to supply the gate driver bias in motor drive or inverter applications. The user can also use jumpers to set Unipolar or Bipolar PWM gate driver.

Features
  • 3A source current and 7A sink current
  • Can use jumpers to set Unipolar or Bipolar PWM gate driver
  • Small delay time, rise & fall time
  • Provides the signals and power supplies to drive half bridge
  • Fly-Buck Constant On-Time, no loop compensation required
  • Input can be a loosely regulated  24V±20%
  • This circuit design is tested and includes test results

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Schematic/Block Diagram

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Test Data

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP10645.1
(Output Voltage 1)
PMP10645.2
(Output Voltage 2)
Vin (Min) (V)1919
Vin (Max) (V)3030
Vout (Nom) (V)4.58
Iout (Max) (A).1.1
Output Power (W).45.8
Isolated/Non-IsolatedIsolatedIsolated
Input TypeDCDC
TopologyFlybuckFlybuck

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM5017  7.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
SM74101  Tiny 7A MOSFET Gate Driver  Gate Drivers  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5017 Download Download
Download Download
SM74101 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 771 05 Jun 2015 9
Design files (4)
Title Abstract Type Size (KB) Date Views
ZIP 3142 05 Jun 2015 11
ZIP 943 05 Jun 2015 10
PDF 125 05 Jun 2015 8
PDF 189 05 Jun 2015 26

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